Heater



Y.J.S. NAGEL.

HEATER.

APPLZCATION FILED MAR; I. 1920.

Patented Apr. 25, 1922.

j Josgofi J /I/QQQ WITNESS:

* UNITED STA as ATENT OFFICE-1.. J

JOSEPH s; nnen'nor war-Tn, sour narrows.

fnnATER.

,A pIica-tion fil ed, March- 1,1520. sis l no. $621,507.; r

ToIaZZ w homit may concern:

Be it known that I, JOSEPH S. NAGEL, a citizen of the United States, residing at liilhite,v in thecounty ofLBrookings and State of So 1thDakota:,.l-1ave invented new and useful Improvements in Heaters, of which the following is a specification. p 3 1 This invention relates to a doughraising box andthe principal object ofthe invention is to provide a box, the walls of; whiclr-are constructed to retain-the heat therein, and adaptedto contain blocks of soap-stone or the like which are to begheated' before being placed in the box.

Another ob 'ect of the invention is to provide a thermometer for indicating the temperature within the box and ventilators for controlling said temperature. 7

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describingmy invention in detail, reference will be had to the accompanying. drawings wherein like characters'denote like or correspondingparts throughout the several views, and in which Figure 1 is a front view of thebox with the cover raised. I

Figure 2 is a sectionalview through the center of the box taken on line 2-2 of Fig;

ure 1. Y I

Figure 3 is a detail view showing the controlling means in the partition.

In these views 1 indicates the box and 2 the cover therefor. The walls of the box are composedof inner and outer strips of wood, indicated at 3 and an intermediate layer of insulating material, indicated at 4, said layer 4 being spaced from the wooden strips so as inclined face 10 on the cover engages.

to leave air spaces, as indicated at 5. The cover 2 is similarly constructed and an opening 6 is formed in the center of said cover, said opening being closed by the inner and outer plates of lass. indicated at 7 The upper edge of the ox is formed by the strips 8,

said strips having inclined shoulders 9 formed on their inner edges with which an The cover is hinged to one of the strips 8 as shown. An inner lining of metal is secured to the inner walls and bottom of the box as indi- -5Lcated at 11. Cleats-12 are secured to the ini161 wall of the boxan appreciable distance Specification of ssi n- -Patei1te'd Ap1'.25;3l9 22;

abovethefbottom thereofand these cleatsyare v provided with inclinedi'nner edges to which are secured strips of felt-as indicated at 18. A. partition. 14 has, its edgesbevel'ed' for engaging these inclined edges of the cleats so that said cleats. will supportthe partition across the box. Thelstrips of feltwil'lfform a tight fit. In the spacfe'formed said partly tion I locate the bricks 15of heat retaining material such assoap stone A pan; 16 is adapted to beplaced on saidblocks below the 1' partition and is to. CQI tain waterT-so a's'jto moisten the heated air withinthe box.

the "rear end of said" partition openings 17 are formed which are controlled by the slide 18. A part of this slide projects through an opening in the box so that it may be operated from outside the box to cover and uncover the openings so as to regulate the passage ofair I passingfrom the space below the partition to the space above the partition. An opening 19 is formed in therear of the box immediately above the partition and this opening is controlled'by the shutter 20. Wire gauze 21:

.is placedover said opening so asto preventthe entrance of insects andthe liketherethrough. lA similar opening 22 is formed in the front side of the box. adjacent'its upper end; this opening having the wire gauze 23" therein and beingcontrolled by the shutter 24." elongated opening25 is formed in the front face of theffront wall of the box,

the ends of which arein communication with '7 the inside of the box'bymeansof the ports- 26', anda thermometer 27 is-placedin said opening. I The front part of the openingis closed bya plate of glass 28 so the thermom; eter' can be read throughsaid glass. Theair from the interior of thebox will'circulate through the opening by way of the ports and placed in the box. The receptacle contain ing the dough is then placed in thebox'and 110 high, as recordedby the thermometerjthe I shutters 20 and 2 1 may be manipulated" to" f the top closed If the temperature is too The pan of water is then placed on Q ed through the glass covered opening in'the top.

-quickening the rising 'of the dough it Will of course be-understood that it may be used for other purposes such as keeping different kinds of food hot. The heated blocks may beremoved and the box used as a bread box. It is thought from the foregoing description that the advantages and novel features of my invention Will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall Within the scope of the appended claim.

What I claim is:

LA box of the class described having its Walls thereof composed of inner and outer strips of Wood, a cover provided for said V box an intermediate layerof insulating ma- While the box is mainly designed for box and having inclined shoulders formed terial being spaced from the strips 30 as to provlde air spaces, said cover having an opening fOl1Il6d"1Il tl16 center thereof, and

inner and outer plates closing said openmg, strips forming the upper edge of the on their inner edges, an inclined face proan'inner lining. of metal secured to the invided on said cover and engaging the latter, 7

ner Walls and bottom of the box, cleats secured to the inner 'Wall of the box being pro-.

vided With inclined inner edges, stripsiof felt being secured thereto, a partition having its edges'beveled for engaging the inclined edges of the cleats saidpart'ition having openings therein and means for controlling the openings from the outside of the box, blocks of retaining material located in the lower chamber, adjustable ventilators in the Walls of the box above the partition and a glass; sight opening inthe cover.

JOSEPH S. NAGEL. 

